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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Calibrating a Kamal
From: Brad Morris
Date: 2017 Dec 1, 22:51 -0500
From: Brad Morris
Date: 2017 Dec 1, 22:51 -0500
Ah for Jesse Ramsden's dividing engine...
Image attached!
On Dec 1, 2017 11:00 AM, "Örjan Sandström" <NoReply_Sandstrom@fer3.com> wrote:
573/10 is another ratio (57.295779513082....) 573mm long string 10mm=1°
works for any unit. But metric is simplest and 5mm square or for tech drawing 1mm is common linespacing on paper.
trisectipn and quintsection are pains though, bane of instrumentmakers throuh ages
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